MICROFICHE REFERENCE LIBFUUW - Cd3wd.com

38to return the lever. Combinations of weights varying between these twocases are utilized depending on the lift, terrain, and attendant’s liking.A pole usually connects ; the bucket and the lever so that the bucket can bepushed into the water. This is normally done where the lift is 3 to 10feet. However, if the lift is greater or the water source is in a narrowwell (Figure 3.3), a rope or chain may be used instead of a pole. Whenthe lift of single shadouf is exceeded, a series of them are oftenemployed-- one discharging into the supply pool of the one above it.The lever, pivot, and pivot supports are usually of wood, whilecounterweights vary in composition; rock, dried mud ball, concrete, can befilled with water or sand, etc. The actual water container may be aleather bag fastened to a metal hoop, a used petrol can (Molenaar, 1956),a lined basket, or metal bucket.Table 3.1 gives the various performance data that have been reportedfor the shadouf.Here again, initial costs will vary with lift, capacity, and availabilityof construction materials; however adjusting Molenaar’s informationto 1975 U. S. dollars, the bucket, rope and frame can be expected to costabout $12.00.The term picottah )or paecottah) is often applied to a specificvariation of the counterpoise lift which uses one or two persons asmovable counterweights in place of, or combined with, the fixed counterweight(Figure 3.4) . This device is larger and has a longer lever thana regular shadouf and thus is utilized for higher lifts, usually from 15to 30 feet. To operate this water lifter, the “counterweight” person(s)walks back and forth along the top of the lever, which has eithera notchedor plank walkway, and hand rails. As his weight is shifted, the bucket